Update hdinsight-release-notes.md

Change that won't render -- test. Extra para.
Update sql-database-elastic-scale-glossary.md

testing the external editing system
Merge pull request #2244 from sidneyh/patch-1

Update sql-database-elastic-scale-glossary.md
Merge branch 'master' of https://github.com/WindowsAzure/azure-content-pr
Merge branch 'master' of https://github.com/Azure/azure-content into FromPublicRepo
Merge pull request #5859 from Azure/FromPublicRepo

From public repo
Updated with notification that the non-SSL port is disabled for new caches and instructions to enable it
fixed link and updated date
Merge pull request #5861 from steved0x/master

Updated Azure Redis Cache how to with info on the new on-SSL port being disabled by default on new caches
Update machine-learning-recommendation-api-quick-start-guide.md
fix bugs in two hdi articles
Merged with master
Update machine-learning-recommendation-api-quick-start-guide.md

API table updates - final
fix azure sendgrid php documentation
fix azure sendgrid php documentation
fix azure sendgrid php documentation
Update hdinsight-use-hive.md
Update sql-database-elastic-scale-federation-migration.md

Correct the ALTER FEDERATION link to point to the correct MSDN page.
Merge pull request #5872 from Blackmist/patch-1

Update hdinsight-use-hive.md
Merge branch 'master' of https://github.com/Azure/azure-content-pr